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  4. Search for dark matter produced with an energetic jet or a hadronically decaying W or Z boson at $ \sqrt{s}=13 $ TeV
 
research article

Search for dark matter produced with an energetic jet or a hadronically decaying W or Z boson at $ \sqrt{s}=13 $ TeV

Sirunyan, Albert M
•
Tumasyan, Armen
•
Adam, Wolfgang
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July 5, 2017
Journal of High Energy Physics

A search for dark matter particles is performed using events with large missing transverse momentum, at least one energetic jet, and no leptons, in proton-proton collisions at $ \sqrt{s}=13 $ TeV collected with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 12.9 fb$^{−1}$. The search includes events with jets from the hadronic decays of a W or Z boson. The data are found to be in agreement with the predicted background contributions from standard model processes. The results are presented in terms of simplified models in which dark matter particles are produced through interactions involving a vector, axial-vector, scalar, or pseudoscalar mediator. Vector and axial-vector mediator particles with masses up to 1.95 TeV, and scalar and pseudoscalar mediator particles with masses up to 100 and 430 GeV respectively, are excluded at 95% confidence level. The results are also interpreted in terms of the invisible decays of the Higgs boson, yielding an observed (expected) 95% confidence level upper limit of 0.44 (0.56) on the corresponding branching fraction. The results of this search provide the strongest constraints on the dark matter pair production cross section through vector and axial-vector mediators at a particle collider. When compared to the direct detection experiments, the limits obtained from this search provide stronger constraints for dark matter masses less than 5, 9, and 550 GeV, assuming vector, scalar, and axial-vector mediators, respectively. The search yields stronger constraints for dark matter masses less than 200 GeV, assuming a pseudoscalar mediator, when compared to the indirect detection results from Fermi-LAT.

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Type
research article
DOI
10.1007/JHEP07(2017)014
ArXiv ID

1703.01651

Author(s)
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Aşılar, Ece
Bergauer, Thomas
Brandstetter, Johannes
Brondolin, Erica
Dragicevic, Marko
Erö, Janos
Flechl, Martin
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Date Issued

2017-07-05

Publisher

Springer Nature

Published in
Journal of High Energy Physics
Volume

2017

Issue

7

Start page

14

Subjects

p p: colliding beams

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dark matter: mass: lower limit

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dark matter: pair production

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Higgs particle: invisible decay

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W: hadronic decay

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Z0: hadronic decay

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transverse momentum: missing-energy

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p p: scattering

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mediation

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coupling: vector

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coupling: axial-vector

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coupling: pseudoscalar

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coupling: scalar

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dark matter: direct detection

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Higgs particle: branching ratio: upper limit

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CERN LHC Coll

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background

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final state: ((n)jet)

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jet: multiplicity

•

GLAST

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CMS

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experimental results

•

13000 GeV-cms

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LPHE  
Available on Infoscience
February 17, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/165856
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